Ok fair enough, Juan and Abraham told me that they used to use the powerful script made by Steve Johnson "Unwrap Tools" and if they install my Unwrap Extension they loose all those options. After hard work, I’ve finally finished the modification of that script to include the Max7 features as well as new ones that the script hadn’t implemented.

For example, soft selection, or different types of relax, and the new max7 features, paint soft selection, and edge loop. To install it just decompress the zip file into your 3dsmax6 folder. Let me know if you find anything that doesnt work or you want to include more options !

Download: [ UnwrapTools1.45.zip ]